Gearbox oil plug part number

[Pagan]

Hi all, I’m in the process of doing a gearbox oil change on my Z4 E85 2.0i 2006, 6-speed manual.

I’ve had issues determining the part number for replacement plugs (one of the old ones was leaking). BMW themselves, a dealer and RealOEM say it is 23127602815 with no gasket. However, the ones I’ve taken out are longer (same thread pitch though) and have a gasket like 23117531356. My gasket is light turquoise and says DIN-3869-18, FKM and B+S on it.

Does anyone have any insights into the right part? Thanks.

 

[Rockhopper]

2815 is the correct one.

1356 is for much later cars (2013 onwards)

 

[colb]

Real oem shows
05 Screw plug M18X1,5X12 2 Part Number 23127602815
Same plug for Filler and Drain neither are fitted with sealing washers, they will probably be tapered threads like my 2003 2.5 and dont need seals/washers, if the female threads are worn in the box then some ptf plumbing tape around the plug threads will ensure a better seal.

 

[Pagan]

Thanks for the thoughts. The thing that's confusing is that all the guides/videos I've seen show the same longer plug with light turquoise gasket that I have, e.g. Figure 2 on https://www.pelicanparts.com/techarticles/BMW_Z4M/114-TRANS-Manual_Transmission_Fluid_Flush/114-TRANS-Manual_Transmission_Fluid_Flush.htm#project-photos

 

[Rockhopper]

The car Pelican are demoing on is a Z4M - that's not what you have But maybe some people see that later style plug as an upgrade?

 

[Pagan]

Haha, of course. I've seen 2.5i and 3.0i guides that also use the same long plugs.

Since both the long and short plugs seem to fit, I think I'll use my old longer plug (in good condition) on the the drain hole and the new shorter one on the fill hole, both with a bit of PTFE.